Type-writing machine.



F. YOUNG. TYPE WRITING MACHINE. APPLIGAQTION II-LED 1 23.21, 1911;

6' 2 sums-sun! 1.

- 29 1 fiQ/fleuirewi- 1 20 7 /Mi/ y Patented Mar. 4,1913.

F.A.Y0 NG. TYPE WRITING MACHINE. AP-PLIOATION FILED 115x21, 1 911,..

Patnted Mar. 4,1913.

' a-device which will enable the universal bar.

FRANK A. YOUNG, or New YORK,

COMPANY, OF -NEW' YORK,

. OFFICE.

N. Y. AS SIGNOR T0 UNDERWOOD TYPEWRITER N. Y., A CORPORATION OF DELAWARE.

' ryrnwmrmo MACHINE.

Specification of Letters Patent. Application filed February 21. 1911.

Patented Mar. 4,1913. SerialNo.609,88 1.

To 07/ w/m/n it may concern:

Be it known that I, FRANK A. YOUNG, a citizen of the United States, residing in New York, in the county of New York and State of New 'Yo'rk, have invented certain new and useful Improvements in Tvpe-' Writing Machines, a specification. I

This invention relates to a device for facilitating the removal of the type bars from a typewriting machine.

In the Underwood machine, the feed of the carriage is controlled by means of an escapement at the operation of a universal bar, which is struck by the type bars in their movements. The type bars arehung upon an arc-shaped fulcrum rod ina segment, andeach type bar is formed with a heel which moves the universal bar. The latter preventsthe removal of the type bars from the segment. I, One object of this invention is to provide of which the following is to be moved away, so that any type bar can be removed from the machines, and to construct the parts so that this movement of the universal bar may be accomplished without operating the escapement.

In theaccompanying drawings, Figure l is a perspective showing a universal bar partly broken away, and also showing anescapement; and in connection with the universal bar, my improvement is illustrated for permitting the forward movement of the universal bar without operating the escapement. Fig. 2 is a side elevation ofthe escapement mechanism, a portion whereof is shown broken away, and in section. The universal bar is also shown partly broken away, and the relation of the universal'bar to the segment when moved forwardly by my device, is also illustrated. In this view, a portion of a type'bar and its rocker are shown in full lines, and in dot-ted lines I indicate the manner in which the type bar may be moved to disconnect it when the universal 'bar is held in a forward osition. Fig. 3 is a plan of the same parts s own in Fig. 2, the type bar being omitted. This viewshows a part of the universal bar broken away, section. The universal bar is in normalp sition. Fig.4

shown in cross section, and

and partly shown in cross is .a. view similar to- Fig. '3,

but with certain parts broken away, and

this view indicates the parts with the universal bar advanced as in Fig. 2, to permit the removal is a perspective, showing a portion of the universal bar together with the shifting pawl of my invention, and illustrating 'how this pawl normally operates the escapement when the universal bar advances. In this view, there is shown the end of a lever which, when operated, engagesthe shifting pawl,'and forces it to one side so that it will not operate the escapement. Fig. 6 is a view similar to F i 5, and illustrating the lever in contact witi the shifting pawl, holding the shifting pawl displaced laterally, so that it will not 0 erate the esc'apement. This view shows t e parts in the relation which they assume when the pawl has been shifted but before the universal bar is advanced. Fig. 7-is a view similar to Fig. 6, but showing a. later stage of the movement, and illustrating how the shifting pawl may advance with the universzlil bar Without actuating the escapement aw p On the rear portion of the typewriter frame I there is provided an esca ement frame 1 comprising two .feet 2, which are adapted to be secured to the main frame 3 of the typewriter in the usual manner, and

of a type bar. Fig. 5

this frame 1 supports a rotatableesoa'pe ment wheel 4, which is connected with the carriage, (not shown), by meausof 'apinion 5, through a one-way clutch 6. The escapement wheel 4 is provided with a series of openings 7, with which coiiperate a detent pawl The construction of this escapement'wheel and the p'awls 8 and 9, is fully described in my co-pending application Serial 609,304 filed Feb. 18, 1911. The two pawls are secured ona being mounted to slide in suitable forks 11. In connection with the pawl 9, a s ring 11 tends to return the pawl toward the right, (as viewed in Fig. 2),and holds'the detent pawl or do 8 normally in engagement with one of the The pawl 9 projects from the forward fork 11.- The operation of. the escapement is such, that if the pawl 9 is forced rearwardly, the escapement wheel will be fed.

yoke 10 the said pawl 9 openings? as shown.

From a rocker 12 an arm 12 extends, which actuates a ribbon feed shaft 12 in the usual 1113111181?- At the rear side of the frame 1, the rocker 12 is mounted in the usual manner, and to the upper end of this rocker a universal bar 13 is attached, the forward part of the said universal bar being disposed near asegment 14, having an arc-shaped fulcrum rod 15, on which typebars 16 are mounted in the usual manner, that is, each type bar is provided with a hook 17 which engages the rod 15, as indicated in Fig. 2. A spring 13 is provided for returning the universal bar, as shown in Fig. 2. The type bar is also providedwith the usual curved slot 18, by .meansof which it is connected to the usual operating lever 19. Near the hook 17 the type bar is formed with the usual heel 20, to strike the universal bar and force the same rearwardly to actuate the escapement.

My improvement comprises a feed operator in the form of'a shiftable pawl or member 21, which is preferably in the form of a vertical plate having a forwardly extending tongue 22, which is normally held in alinem entfiwith the operator 9, so that it will operate the escapement when the uni- .Versalbar. moves forwardly. This operator 21 isshiftable on a pivot pin 23, so that a portion of its body operates as a counterweight. The purpose of shifting it is to enable it to be silenced when the universal bar is thrust back to release the type bars.

The pivot pin 23 is mounted in a bracket 24, fixed on the universal bar 13 by means of screws 25 in adjusting slots 26. These slots extend in the direction in which the universal bar moves, so that they enable the distance of the tongue 22 from the end of the pawl 9 to be nicely adjusted. The operator 21 occupies one of the usual 0 'enings 27, in the universal bar 13, and an e ge of the pawl has a notch or shoulder 28, which engages the edge of this opening, so as to limit the rocking movement of the operator.

In order to enable the operator 21 to be shifted and silenced, and the universal bar to be simultaneously moved rearwardly, I provide a shifter in the form of a lever 29, which is pivoted at 30 on a bracket 31, said bracket secured by screws 32 to a portion of frame 1, Fig. 2. The bracket 31 has an extension 33, extending, along the handle 34 of the lever, and having projections or stops which limit the swinging of the lever. The inner end of the lever 29 is formed with an inclined edge or cam 36, to strike the right-hand ed e of the operator 21,when this end of the ever is swung forwardly; and adjacent to the cam edge 36,

; in Figs. 2 and there is an edge 37, to an age the face of the shifted operator 21, to orce the universal bar rearwardly.

The mode of operation of these parts is illustrated in Figs. 5 to 7. As the cam edge 36 strikes the shiftable operator the latter is rocked toward the right, so as to move the tongue 22 out of alinement with the'dog 9; and then the edge 37 engages the operator and forces the universal bar"rearwardly. The completion of this movement is shown 7 the tongue 22 moving up alongside of dog 9 but out of alinement with 'it, so that it does not strike the dog and does not operate the escapement. From I Fig. 2 it will be seen that when the universal bar has been moved rearwardly in this manner, any type bar'may be removed by swinging it up, and then raising it so as to disengage its hook 17 from the fulcrum rod 15.

Having thus described my invention, I

claim:

1. In a typewriting machine, in combination, a series of detachable type bars, an escapement, a universal bar adapted to move toward said escapementto operate the same, said universal bar preventing detachment of said'type bars, an operator carried by said universal bar to actuate the escapement, a lever to engage said operator and shift the same laterally to silence it, and to retract said universal bar to release the type bars.

2. In a typewriting machine, the combination with a type bar having a bearing, of a universal bar locking it to its bearing, a.

spring holding said universal bar operative,

an escapement arranged to be operated by said universal bar at every operation of a type bar, and means for disabling the connection between said universal bar and escapement and moving said universal bar to unlock said type bar. 7

8. In a typeivriting machine, the combination with a universal bar moving with every operation of a type bar. and operating an escapement, of means independent of any type bar for moving said universal bar, and an arm for disabling the connection between said universal bar and said escapement by said independent moving means.

+1. In a t-ypewriting machine, the combination with an escapement, of a universal bar,

versal bar. I

FRANK A. YOUNG.

Witnesses:

' PAUL ZIRON, l

F. D. AMMEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, I). 0. r 

